Rotary prime mover



D.22,1942.- T SHIMIZU' 2,305,797

ROTARY PRIME MvER Filed March l2, 1940 3 Sheets-Sheet 2 Dec. 22, 1942.T, sHIMlzU ROTARY PRIME MOVER Filed March l2, 1940 3 Sheets-Sheet 5`Patented Dec. 22, 1942 2,305,797 ROTARY PRIME MovER Toyomasa gawa-ken,Japan; Custodian Shimizu, Naka-ku, Yokohama, Kanaveste-d in the AlienProperty Application March 12, 1940, Serial No. 323,623 In Japan March15, 1939- 1 Claim. (CrL121-49) v The present invention relates to asimple and convenient rotary prime mover.

The object of the invention is to rotate an axle in a cylindercontinuously by means of simple gear arrangement, without resorting tovalve, clutch or other complicated arrangements.

Another object of the invention is to obtain/ the arrangement in a smallcompact space, even in using double cylinder system.

Still another object is in that by rotating the main shaft from outside,the prime mover or motor may be efficiently used as a pump.

The annexed drawings show the present invention by way of example andshow a case with double cylinders.

Fig, 1 shows a sectional elevation.

Fig. 2 shows its sectional side elevation.

Fig. 3 shows an elevation, showing gear relations.

Fig.l 4, Fig. 5 and Fig. 6 are drawings showing relations of gear wheelsand axial plates.

In the present invention, a special gear arrangement is employed i. e.,a driven wheel with teeth on part of its circumference and toothlessface on the remaining portion, is used, while the drive wheel has teethon a portion of circumference and toothless face on the remainingportion which engages the toothless face of the driven wheels. A pair ofsuch driven wheels is mounted on the main axle in such manner that thetoothed portions are located on opposite positions.

The engaging drive wheels are mounted on and xed to their respectiveaxial plate shafts and arranged in such manner that they may freelyrevolve.

Then uid under pressure is introduced in the cylinder in such a mannerthat two axial plates are made to revolve for one revolutionalternately.

By the relation of the moving axial plate and idle one and through thegear arrangement, the main axle is made to constantly revolve in onedirection.

Full explanation will be given referring to an example of theapplication of the invention.

Driven wheel I shown on Fig. 3 and others, has the usual teeth cut onapproximately half of the circumference of the wheel while the remainingportion is finished as toothless face 3.

At one end of the toothed portion, a guide piece 4 is fixed as shown.

Two driven wheels I constitute a set A and B. These wheels are locatedso that the toothed portion of the one is located opposite to thetoothed portion of the other as shown on Fig. 6.

yDrive wheels 1 have half the diameter of the driven wheels I and haveteeth 8 cut long enough to engage-with teeth 2 and a small portion oftoothless face 9 which engages with the blank portion 3 of the drivenwheel.

Tooth shaped guide piece I0 is provided and made to engage with guidepiece 4 of driven wheel I so as to enable the toothed parts to geartogether.

v.Two drive wheels 1 constitute a set and are tted in such manner thattheir locations are slightly different as shown on Fig. 6.

They are mounted on the outer sides of axial plate shafts I I and I2 asindicated on Fig. 2.

The axial plate axles II and I2 are mounted across the cylinders 5 goingthrough them.

At the middle portion of cylinder 5, they are enlarged and engaged so asto be in one line and freely able to revolve relative to each other.

As shown on Fig. 2, the end of shaft II is finished into short shaft oraxial extension of smaller diameter I3 which fits into the cavity oraxial -recess provided at the end of other axle I2; thus they are freeto relatively revolve and stable at the same time.

On the axles, axial plates I4 and I5 are provided so as to revolve roundand to fit tightly on the inner sides of the cylinders.

These axial plates have bent ends as shown in order tozmake the bearingsurfaces as large as possible,v

Pressure uid inlet I6 and outlet I'I are provided in the cylinder, closetogether; no valve is provided ,but inlet pipe I8 and outlet pipe I5 areconnected as shown.

The relative positions of radial plates and toothed Wheels under theconditions shown on Fig. 1 to Fig. 3, are shown on Fig. 6.

Next let us consider the conditions shown on Fig. 4; suppose that uidunder pressure is introduced to cylinder 5 from the inlet I5.

Then the blank face of drive wheel C, comes in contact with blank faceof drive wheel A and does not rotate radial plate I4 and therefore makesthe partitions between inlet I6 and outlet I'I; while the other radialplate I5. is rotated by the pressure fluid and drive wheel D revolvesround while rotating driven wheel B as shown on the condition given onFig. 5.

Radial plate I5 continues to rotate and at the same time, driven wheel Acommences to gear with drive wheel C and radial plate I4 is stillrotated.

is constantly rotated in one direction.

In the present invention, another cylinder 5" may be provided as shown;then similarwprof` visions may be applied and wheels A and B vmay becommonly used; Wheels to engage with them.

In this Way, two or more cylinders may be used,

which will balance the rotatinggpower Vvofytheg;

main axle 6.

It will be seen that in the present invention,

special gear arrangement is used and uid under E andF mayloemadey4pressure is made tol-aston tworadial plates; andi therefore Valve crvother-'complicated arrange,- ment isnot needed; a main` shaft is'fmadeto rotate constantly in one direction, making-@the entire constructionqutesimple;4

Whole system may bemadefto bebuilt in` onev compact form; twoor..morevcylinders may be compositely arranged thusqbalanoing @therotating power of main shaft.

For uid under pressure, water under head, compressed air or steam may be-used.

The system of this invention-,may lbe appropriately employed asa simpleprimemmover.

If main shaft is rotated-fromthe outer-side,

this system may be efficiently employed as a pump.

Having now described and ascertained the nature of my invention, Ideclare that what I claim is as follows:

A device of the character described, comprising a cylinder, a drivenshaft arranged outside the cylinder, a mutilated driven gear fixed oneach end of said shaft,' the toothed portion of each of said gears beingdiametrically opposite one another, a pair of axially aligned driveshafts arranged Within said cylinder and projecting outwardly fromopposite ends thereof, said drive shafts-being disposed parallel to saiddriven shaftgthefmeeting portions of said drive shafts being enlarged;one of said enlarged portions beingaxallyfrecessed, a reduced axialshaft extensiononazthe other drive shaft journalled in the axi-alrecess,a piston plate fixed on the enlarged portion`of`each drive shaft androtatable independently of oneanother, a mutilated drive gear of smallerdiameter` than Athe; driven gears :xed

to the projecting louterfend .ofaeach driveshaft and-adapted toengagewwith one-of saidA driven gearsywhereby the-toothedportionof,oneof saidk drive gearsywill mesh with 'the toothed portion of; one of.thefdriven gears while the other one:of

said` -drivegears` engages; the;v smooth surface,A of

the second mutilateddriv en-y gear, and vice. versa,` means forintroducing a1 pressure fluid; into r.said cylinderv for'4A .pressurefluid'.l TOYOMASAy SHIMIZUL;

charging` said alternately" rotating: said:;piston plates, andlanaoutlet in -saidcylinden for dis-v

